W 638/5 R-2RS1
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 638/5 R-2RS1
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.002 kg
Tolerance class
P0
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
11 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
12.5 mm
Flange thickness
1 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
91 lbf
Radial static load rating
32 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Grease
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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W 638/5 R-2RS1 Bearing Product Overview & Core Advantages
The W 638/5 R-2RS1 is a metric single row deep groove ball bearing engineered for precision and reliability in compact spaces. Its sealed construction and stainless steel components make it exceptionally resistant to corrosion. This bearing is designed to primarily handle radial loads efficiently while offering reliable performance within a wide temperature range of -30°C to 120°C. Its small bore diameter of 5 mm and lightweight design at just 0.002 kg make it ideal for applications demanding miniaturization and high precision.
W 638/5 R-2RS1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W 638/5 | Basic bearing designation with a 5 mm bore diameter. |
| R | Designates a flanged outer ring, facilitating simplified mounting and axial location. |
| 2RS1 | Indicates contact seals on both sides (RS1 type), providing effective protection against contaminants and retention of lubricant. |
W 638/5 R-2RS1 Bearing Structural Features & Performance Benefits
- Robust Sealed Design: The 2RS1 contact seals on both sides effectively shield the bearing's internals from dust, moisture, and other contaminants, while retaining the factory-applied grease lubrication. This contributes to a maintenance-free and long service life.
- Corrosion Resistance: Manufactured entirely from stainless steel (rings, balls, and cage), this bearing is highly resistant to rust and corrosion, making it suitable for harsh environments and applications requiring washdown.
- Simplified Mounting with Flange: The integrated flange (R) on the outer ring allows for easy axial positioning and secure mounting into a housing, simplifying assembly and reducing overall costs.
- Precision Performance: Built to P0 tolerance class and standard CN radial internal clearance, it ensures consistent and smooth operation, which is critical for precision instruments and small machinery.
W 638/5 R-2RS1 Bearing Typical Application Areas
- Small Electric Motors and Gearboxes
- Precision Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Radio-Controlled Models and Drones
- Instrumentation and Measurement Devices
- Food Processing and Packaging Machinery (due to stainless steel construction)
